Exhaust gas after treatment system, especially for a diesel engine

Abstract

Exhaust gas aftertreatment system, especially for a diesel engine. The invention proposes an exhaust gas aftertreatment system having an exhaust gas particulate filter ( 3 ), a nitrogen oxide reduction catalytic converter ( 7, 8 ) connected downstream of the exhaust gas particulate filter, and an apparatus ( 17 ) for adding reducing agent. As claimed in the invention, the exhaust gas particulate filter ( 3 ) is designed as a porous cylindrical filter body having a substantially radial exhaust gas inflow direction into the filter body, a filter inner region ( 26 ) for filtered exhaust gas, and an axial exhaust gas outflow direction out of the filter inner region ( 26 ), and reducing agent is added into the filter inner region ( 26 ) via the apparatus ( 17 ) for adding reducing agent. Use in motor vehicles, in particular in commercial vehicles.

1 - 9 . (canceled)  
   
   
       10 . An exhaust gas after treatment system, especially for a diesel engine comprising: 
 an exhaust gas particulate filter,    a nitrogen oxide reduction catalytic converter connected downstream of the exhaust gas particulate filter, as seen in the direction of flow of the exhaust gas,    an apparatus for adding reducing agent,    wherein the exhaust gas particulate filter is designed as a porous cylindrical filter body having a filter inner region for filtered exhaust gas, and in that reducing agent is added into the filter inner region via the apparatus for adding reducing agent.    
   
   
       11 . The exhaust gas after treatment as claimed in  claim 10 , wherein the filter body is designed as a cylindrical hollow body with a porous wall.  
   
   
       12 . The exhaust gas after treatment system as claimed in  claim 11 , wherein the filter body is formed by porous filter plates which are combined in pairs.  
   
   
       13 . The exhaust gas after treatment system as claimed in  claim 10 , wherein the exhaust gas particulate filter and the nitrogen oxide reduction catalytic converter are arranged in a common housing.  
   
   
       14 . The exhaust gas after treatment system as claimed in  claim 11 , wherein the exhaust gas particulate filter and the nitrogen oxide reduction catalytic converter are arranged in a common housing.  
   
   
       15 . The exhaust gas after treatment system as claimed in  claim 12 , wherein the exhaust gas particulate filter and the nitrogen oxide reduction catalytic converter are arranged in a common housing.  
   
   
       16 . The exhaust gas after treatment system as claimed in  claim 10 , wherein an oxidation catalytic converter is connected upstream of the exhaust gas particulate filter, as seen in the direction of flow of the exhaust gas.  
   
   
       17 . The exhaust gas after treatment system as claimed in  claim 11 , wherein an oxidation catalytic converter is connected upstream of the exhaust gas particulate filter, as seen in the direction of flow of the exhaust gas.  
   
   
       18 . The exhaust gas after treatment system as claimed in  claim 12 , wherein an oxidation catalytic converter is connected upstream of the exhaust gas particulate filter, as seen in the direction of flow of the exhaust gas.  
   
   
       19 . The exhaust gas after treatment system as claimed in  claim 13 , wherein an oxidation catalytic converter is connected upstream of the exhaust gas particulate filter, as seen in the direction of flow of the exhaust gas.  
   
   
       20 . The exhaust gas after treatment system as claimed in  claim 14 , wherein an oxidation catalytic converter is connected upstream of the exhaust gas particulate filter, as seen in the direction of flow of the exhaust gas.  
   
   
       21 . The exhaust gas after treatment system as claimed in  claim 15 , wherein an oxidation catalytic converter is connected upstream of the exhaust gas particulate filter, as seen in the direction of flow of the exhaust gas.  
   
   
       22 . The exhaust gas after treatment system as claimed in  claim 16 , wherein the exhaust gas particulate filter and the oxidation catalytic converter are arranged in a common housing.  
   
   
       23 . The exhaust gas after treatment system as claimed in  claim 17 , wherein the exhaust gas particulate filter and the oxidation catalytic converter are arranged in a common housing.  
   
   
       24 . The exhaust gas after treatment system as claimed in  claim 18 , wherein the exhaust gas particulate filter and the oxidation catalytic converter are arranged in a common housing.  
   
   
       25 . The exhaust gas after treatment system as claimed in  claim 19 , wherein the exhaust gas particulate filter and the oxidation catalytic converter are arranged in a common housing.  
   
   
       26 . The exhaust gas after treatment system as claimed in  claim 20 , wherein the exhaust gas particulate filter and the oxidation catalytic converter are arranged in a common housing.  
   
   
       27 . The exhaust gas after treatment system as claimed in  claim 21 , wherein the exhaust gas particulate filter and the oxidation catalytic converter are arranged in a common housing.